摘要
At the end of 2019,the coronavirus disease 2019(COVID-19)epidemic broke out around the world.COVID-19 is an acute respiratory disease caused by severe acute respiratory syndrome coronavirus 2(SARS-Co V-2);its most common symptoms include fever,dry cough,and fatigue[1,2].The fast spread,high fatality rate,and continuous mutation of SARS-Co V-2 have brought huge challenges to public health and the global economy[3,4].
